I would suggest looking at All-In-One installations that are provided by deployment toolings, like:

1. OpenStack-Ansible: https://docs.openstack.org/openstack-ansible/latest/user/aio/quickstart.html

2. Kolla-ansible: https://docs.openstack.org/kolla-ansible/latest/user/quickstart.html

Using that methods you will be able to get basic concepts and deploy an OpenStack sandbox. Later on same projects/concepts can be extrapolated for real production deployments.

You also can always spawn a devstack that is heavily used by OpenStack developers to test code and spawn deployment environments: